For some reason the new ver. of the plugin does so much more load on the GPU encoder when the main stream function in obs itself works.
Checked several times - previous version on OBS 27 works very nice and "average time to render frame" never goes above "1.0ms" but the new version...average time to render frame can go up to !1.7-2ms! and sometimes it creates missed frames.
Rolled back to obs 27 and old version of the plugin.