my problem is when I select enchanced video renderer , snapshots become small

with EVR custom presenter, no problem is detected...

personally I prefer enchanced video renderer because the EVR custom presenter make channel cropped and in few secondes i cannot control my computer : all is blocked , specially with HD channels ....
I tried differents prog's editions (including the last one ) and I changed differents settings in snapshots, codecs, and demultiplexor cases , but the problem is still here...
any suggestion is welcome ....
thanks