frozen "clear Mode" after updating >8.5.5 WIN10Pro

Defcon

Hello, just sharing my "experience":

until 8.5.5 my system (13 Cams B800 R812+2wlans) did work on my 3 different desktop PCs Win10Pro & Laptop.
after updating > to e.g. 8.11.0 latest i recognized a frozen (black window content when reducing window size frame) cam-live-view display when selecting "klar" / Clear-mode. (sound is still there) Clock is as well frozen. reducing FPS & BitRate setting to lowest value does not help either - frozen too

did the following to exclude errors on my side:
- internet provider / telekom has updated my DSL to > 250Mbit contract / 40Mbit upload
- disconnected ALL LAN connections (&16 channel router 1Gbit) beyond my Router connecting only 1x 8 switch 1Gbit with connection yellow to router only; 2nd is NVR 3rd is PC (desktop Windows 10)
=> issue is the same! screen frozen, clock & no picture in sharp mode (sound is transmitted in "realtime (1sec delay)
- disconnected the Windows10PC and connected Laptop instead - same there
reverted back on both machines to 8.8.5 version which is the last to me known working on my setup

so somethings changed trastically on reolink side which i ask you pls to solve as i read in the forums many concerns too about update & functionality itself of the newer versions released

in addition i wonder the software / driver on 8.11.0 has around 255MB against 8.8.5 172MB -> what does "consume" 80 MB between those versions?!

REOLINK, pls provide solution for this kind of "updating & software mass" which cost me in total now 3 hours to "INVESTIGATE" that it is not on my side related
thank you