I've recently upgraded to Prepar3d v4, and i've also installed, as usual, some ORBX products (FTX Global, Vectors, OpenLC), but i noticed a problem with the terrain textures loading: they keep being blurry also if i pause the game. After trying many settings a many prepar3d.cfg tweaks, I totally uninstalled the simulator and the graphics drivers and reinstallled back again, keeping Prepar3d with no addons and first launch settings. Nothing changes, also if i slide all scenery settings to the right and i check "high terrain textures". I have hyperthreading disabled and default nvidia settings. Specs: i7 4790k @ 4.5gHz, MSI gtx 970 g1 gaming 4gb, 2k monitor, 16 gb of RAM.
here are some pics: