TGYoshi wrote:It's very very unlikely that this is caused by whatever tmarc suggests.
Somehow you are contradicting yourself if you name the shaders as buggy, but don't think that deleting the shader cache will help.
"Thanks" for not believing at all the experience gained during of several years of Maniaplanet forum... actually those recommendations helped quite a few people in the past
New video drivers and a systemconfig which was created based on older driver often don't work together, especially if the users also twiddle some settings in the nVidia control panel only. Observed issues are fps drops, lower general performance, less frequently texture issues, but also editor issues.
The d3d cache content also partially results from those settings. Some shaders are compiled depending on video driver and video game settings (= features currently selected/available).
And if you change your video card e.g. from AMD ot nVidia or the other way, it is even more interesting.
I also experienced crashes (longer time ago) during placing of blocks (where in window mode you can see in the title bar that shaders are compiled), after I had updated a nVidia driver (it was on GTX560ti that time). Only going back to a previously working driver helped. Later I tried a newer WHQL driver, and the issue was not there anymore.
Additionally, if you have a small SSD as C drive and not moved out the ProgramData, it could be possible that at some point in time the drive is full, and a shader file or cache entry (like lightmap) cannot be written.
To pinpoint the cause, it would be interesting to know when those issues exactly started to appear.
But without proper debugging possibilities (which only Nadeo has) it will be difficult.