NeedForSpeed73

I'm just back to Prepar3d since I've upgraded my PC to a Skylake 6700K @ 4.5Mhz. I've also updated to latest P3D v3.3.5 (was on 3.0 on my old PC) and now I'm running it from an SSHD instead of the dedicated SSD I used to have on the old machine. GPU is the same 980Ti 6 Gb. I'm getting this odd black textures that keep staying sometimes forever unless I "force" a refresh for example by simply opening and closing the settings panel. I've tried every possible tweak to Prepar3D.cfg (MIN_FIBER_TIME_SEC=0.20, FIBER_FRAME_TIME_FRACTION=0.33, TEXTURE_BANDWIDTH_MULT=180 and TEXTURE_MAXLOAD=30) with no luck. The hardware is quite high specced and I don't think this is a HDD (only piece of the new hardware that is slower than the old one) problem: the HDS activity light is off while the textures aren't loaded. It just seems they are not "kicked in". SO TO ME THIS LOOKS LIKE A PREPAR3D CLIENT BUG! Hope they will fix it soon. :(