I noticed the graphics card was at 90C at one point in the Market Square map. This is on AMD card, went and tested on Nvidia Card, also 90C.
I tried V-Synch, no effect. Then i thought to reduce resolution to lowest and that brought the temperature down. The temperature went down to 60C on lowest resolution but i found 1440 x 900 was good and only a few degrees warmer.

I have a theory as to why this; Maybe a lower resolution map image is being upscaled to fit the entire screen (or RAM loaded play area), however many frames per second and the graphics card has to extrapolate/generate/calculate all the extra pixels as fill in to the empty space on the upscale.

I need owl cat to test the theory by making a map image of 8k or 4k ( or double or quadruple of whatever base image resolution is) and then doing the opposite and scaling it down to the lower resolutions as a test to see if that solves the issue.

So like when they select the lowest resolution image they are selecting 4k downscaled to 1024 x 768.
I am very interested to know the results of this experiment, so if tried please contact me.

Have you checked to see if your GPUs are going through a bottleneck? They might be picking up the slack for your CPU. I would also recommend cleaning out your case fans if you haven't already done so.

No GPU's not going through a bottleneck. CPU is only at 50% load. My case fans are immaculately clean, it is a new case. You could eat off this case, its that clean. My CPU is very cool at 40C, motherboard is 36C.

I've done research, seems to be a Unity Engine related.

Also a Bottleneck of the CPU would only slow the GPU to the speed of the CPU, just making the GPU slower than it could be.

Without knowing more about your system we can't help you much.

That said, the fact of the matter is that this game *is* a power hog.

One thing you can try before lowering resolution is disabling screen space reflections, the SSR implementation in this game is pretty horrible, and very taxing, especially on older GPU generations. Other taxing settings are SSAO, and shadows. The rest is pretty inconsequential.

Disabling those effects has very little to no effect. Seems only a resolution issue.

It depends on what the actual bottleneck is. If disabling effects doesn't help but turning down resolution does, it would suggest that you are GPU limited, not shader-limited but rather memory limited (bandwidth and/or capacity).

You still didn't say what the GPU is (or CPU), so it's all speculation at this point, but just as an example, simply disabling SSR (from high to off) and leaving everything else on 1440p/high more than doubled performance in Kenabres marketplace on an i5-10400 and GTX 1080 (I speak from personal testing).

I have over 4 systems to test on of top tier as well as low and middle tier hardware. I have a GPU with a radiator that i installed. Normally that GPU doesn't go above 40C, however in this application it goes to 76C+, which is unusual.
That is over 30C in temperature increase on a GPU that has a radiator. It's good game series, i bring up the probable unity issue in hopes that efficient coding solution can be discovered in future.