Just tried this for the first time and its rendering with crazy flashing lines and visual issues. I'm on Windows 10, a 64 bit processor which might be the issue.
On Windows, it'll be in a subfolder of your user folder, such as:
c:\Users\[myusername]\AppData\Local\Playscii\
(where [myusername] is your windows user name)
The file is called console.log. I'm specifically interested in the sections that read "Detecting hardware..." and "Detecting software environment...
Here you go!
Detecting hardware...
CPU: Intel64 Family 6 Model 142 Stepping 10, GenuineIntel
GPU: Intel - Intel(R) UHD Graphics 620
OpenGL detected: 4.6.0 - Build 27.20.100.8337
GLSL detected: 4.60 - Build 27.20.100.8337
Vertex Array Object support found.
Maximum supported texture size: 16384 x 16384
Detected screen resolution: 1920 x 1080, window: 1280 x 720
Detecting software environment...
OS: Windows-10-10.0.19041
Python: 3.7.9 (tags/v3.7.9:13c94747c7, Aug 17 2020, 18:01:55) [MSC v.1900 32 bit (Intel)] (32bit)
Modules: PySDL2 0.9.7, numpy 1.19.3, PyOpenGL 3.1.5, appdirs 1.4.4, PIL 8.0.1
SDL: 2.0.10 hg-12952:bc90ce38f1e2, SDLmixer: 2.0.4
Thanks for the info. I'm not seeing any obvious problems with that... the Intel UHD 620 GPU seems like fairly recent hardware, and the driver version number seems pretty up to date (from over the summer?) Are any other 3D applications giving you rendering glitches? If you feel comfortable doing so, you might try upgrading your video drivers to the very latest version: https://downloadcenter.intel.com/product/96551/Intel-HD-Graphics-620