SOLVED : I started having the d3d errors on the 1.5 update. FIX - what worked for me was to lower my performance (no preceivable game impact): OPTIONS -> PERFORMANCE -> Overall set to Medium. I can now play the game even with sieges occurring (I noticed that siege bombardment causes this issue for me). Hope this helps. CPU: i7 7700K, 16GB Ram, nVidia 1060 3Gb, Steam/Bannerlord on M2 SSD shouldn't have to lower performance but I like to play so I'll forgo some quality!