No shader pre-caching occurring, roadside objects now need caching upon contact

Product: EA SPORTS™ WRC
Platform:Steam-PC
Summarize your bug Shader pre-caching is not operational, roadside objects need 'touching' to be cached, causing a stutter the first time you touch all different types.
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? Clear shader cache using windows disk cleanup, or updating graphics driver. Drive any stage, caching will occur when driving the stage, BUT ALSO when touching road-side objects, causing the same stutter/frame hitch as regular stage driving does. Stage-side hitching no longer occurs after you have touched all shader types with the car - it does not matter if you touch it with the rear of your car when not visible in bonnet cam, or with the front where you can see it touch the object. Trees, objects, armcos, all the different types, need to be touched in order for it to cache (and therefore not hitch when you next touch that object/shader type.
What happens when the bug occurs? Frame hitching or stuttering whilst the shader is cached.
What do you expect to see? Shader pre-caching to occur in the menus before stage launch.

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I ran the first monte stage as a baseline, with a graph to show fps drops. Then, for the first time since september, i cleared my shader cache, by upgrading the graphics drivers. I loaded the game, sat on the 'press enter' screen for a minute, then sat on the main menu for a couple of minutes, no messages were seen. Loaded the same stage in monte and experienced the usual shader caching stutters with the associated frame drops.

The stage-side object caching appears to be new, as of the 1.3 patch, but unlike the other shaders, require the car to contact to then get cached - i'm assuming this is due to the effect that happens during a collision, important to note you do not need to see the collision/contact from your camera view, in order for the game to cache it.