I am experiencing the same thing. When I upgraded from 5 star Executor to 7 star my opponents 4-5 star Executors are running circles around me getting a 2 to one shot ratio from their Razor Crest and Xanadu Blood. Darth Merek reported it today and they hid it in the archive rather than moving it here. Below is his analysis which I am experiencing too after my ship upgrade to 7 star.I wish I had not spent the cash on crystals since my Executor worked correctly at lower stars and now at 7 star when attacking leesor star Executors and lessor relic Razor Crests, Hounds tooth and Xanadu it is super slow motion. Below is Darth Mereks post.
So I have a maxed out Executor along with relic 7 Bossk, Beskar Mando, and Cad Bane plus there ships of course are maxed out and when I challenge another maxed out Executor that only has a relic 6 Bossk and relic 5 Ban an Mando which makes them way slower then my ships but the problem is that when my opponent or ai opens up with the executors aoe assist special hey w is it that there RC is landing a mark debuff when everytime I've used it, it never lands a mark. That's not all, there's a lot more wrong going on like my Hounds tooth not gaining any TM when my other ships are being hit kinda like when my opponent opens up with that aoe assist my HT doesn't gain any TM but my opponent is and the last thing is like I said that my ships are faster then my opponents but yet there out running me like crazy and here's an example as my opponents RC use's his special attack on my RC that has 50percent TM keep that in mind and my opponents RC calls XanBlood for assist but after that attack is done with I noticed that my opponents RC has 75percent TM which means that his relic5 Mando RC will go twice before my relic7 Mando RC in which case kills my RC. Now explain that or better yet fix it and another thing how about when a challenger starts a ship battle and there equal in speed and everything else that the challenger that's actually playing go 1st, not the dam ai especially when frustrating and cheating krap like this is going on. Look in to it and Fix it