Your layer thickness is set at 0.5, for 50 microns it should be 0.05.
Try running the Kudo calibration model a few times at different exposures to dial in your exposure setting.
https://www.dropbox.com/s/3b4rjogjcsat41g/KudoCalibrationSample.stl?dl=0
When I ran this with Spot HT I found around 4 seconds worked for me. I have attached my settings
For my models I usually have a 0.2mm base thickness with 60 seconds for first layer then 30 seconds for next 3.
It is also better to be a bit conservative on the lift speeds, after some issues with warping trays using 3DM Cast I have gone back to 15mm / min for all layers. You can reduce the lift height a little bit to compensate if your prints start taking too long.