Hi olegrus
I have disabled the shader cache for Unreal Tournament 3, but it did not improve performance at all. It still drops down to 40FPS with almost no GPU utilization on my RX 480 & Ryzen 5 1600, whereas testing my GTX 1060 in the same system maintains 120FPS+ in the exact same areas with better GPU utilization.
The RX 480 doesn’t have this problem with Unreal Tournament 3 16.9.2 drivers, therefore it is related to the graphics drivers. AMD driver issues made me spend a lot of unnecessary money, upgrading from my R9 280 to RX 480, i7 870 to Ryzen 5 1600 barely improved performance in most of my games, since the Drivers were the culprit in the end. Simply buying a re-certified GTX 1060 solved most of my performance issues due to better CPU & GPU utilization.
I am also not buying a Radeon card anytime soon, because almost every time they add new features or improvements for new games it impacts older games or features for some reason which is unacceptable.
Kind regards