I don't think the RPG is over powered, I'm more frustrated on hitting a tank and the tank almost instantly being repaired by engineers before being able to reload the RPG (or Anti-Tank launchers).
If served damaged was a thing then the tank wouldn't be able to fully repair all the time after taking serious hits, or and if engineers had a repair capacity instead of having unlimited repair abilities I believe the game would be better and players wouldn't be cheesing their K/D in a tank so much.
Its not just the strength of the tank that makes taking one down alone difficult (especially if your a low level or without a well organised crew) but the sheer amount of tanks that are available in a game. Many would likely prefer it if their was less or a limited amount of tanks in some game modes now and again.
Actually and TBH, other vehicles are overpowered more when compared with weapons like the RPG and such, you only get three shots with the engineers RPG alone and its not enough unless you somehow weaken the tank first with mines or something like tank grenades.
Unless you have support of some kind, its very difficult alone and we hate the idea of charging or driving towards a tank to kill it with a repair tool.. very easy to kill if you get on top of it funny enough, usually forcing the driver out too but that's just mad.
If your going down quickly you might not be using the strongest armoured parts of your tank to defend against them. Anyway you don't want the RPG for tanks because the anti-tank launchers are much better. If you appear to be the only engineer in the game I wouldn't recommend the RPG for hunting tanks.
Another suggestion is if one makes that break to get through enemy lines masterfully and manages to hit the tank in the weak spot, reducing the repair efficiency of engineers whilst the tank is severely or heavily damaged is an option. It absolutely amazes me how fast a tank can recover. Let engineer inside the tank help out, give him the keys to keep the tank locked for a moment whist he or she helps repair perhaps..
I don't know but TANKS ARE DEFINETLY OVERPOWERED BECAUSE THEYRE MADE LIKE THAT, so changing the engineers ability rather than the tank or other vehicles is probably a better idea. Then again unrepairable served damage is still a good argument for a new mechanic.
Off road now, when you are carrying the RPG, you become the most obvious moving target in most peoples sights. In my opinion the problem is players who enjoy running straight into high impact zones, and players who don't choose to use them when they really need one.
At distance you can see them coming and dodge them easily as they go right past you, I've watched them approach me through my sniper sights from high ground and across straight roads etc, they are not lightning speed and you can anticipate or avoid them with good movement controls. Fast sprint, jump, slide and crouch reactions along with good positioning always seems to help me.
You actually hear your team shouting RPG!! , that's normally the cue to hit the dirt or too move it. They are less effective and harder to aim at range too, unless they hit something close to you. You can rebind crouch to the thumb sticks to duck quicker.
At close range and like the anti tank launcher too, they always hurt a lot and in most cases you will die if hit by one in any close range scenario but they don't always win unless the hits are really good. I've been hit by the anti tank launcher at point blank range before, went down but survived after being revived but direct hits with any RPG is a certain kill.
If your up against them try stick to the inner corridor walls rather than the outer walls, I don't look at the outer wall directly hoping it will reduce explosive or splash damage taken. I do know the splash damage is amplified in confined spaces, often resulting in one-shot kills. And the ground impact for a non lethal near miss must be between 3-5 metres away from the explosion.
To simplify you need to be at least three metres away from the explosion (walls or ground it hits) and away from confined spaces, away from other troops, objects or anywhere projectiles can bounce off to reduce the chance of a lethal hit.
If your in open terrain for example, a space not near walls or rocks etc, you'll get a lot less splash damage but you'll have less cover against other targets.
And just so you know, having troops near you does not provide cover at all from explosions in Battlefield 6, in most cases, it makes the situation much, much, much worse. There is no body-shield mechanic against explosions so you cant use team mates as shields against things that go BOOM!