mine is also full I think Google should increase no of urls to about 500 as only low paying ads are always displayed
mine are maximum 200 url, to avoid mfa and low bid ads. And the result is positive. I use adsblacklist.com
I use since years zero filter = full competition in bidding = high eCPM = xxxx$ by the end of each months any filter on a high competition market reduces competition and thus number of bidding advertisers for the limited ad slots avaivable on a site.