Google DFP - Adsense Ads Encoding Issues in IE?

Question

Google Adsense

Who knows, please tell me how to make Adsense ads in Double Click For Publishers in Russian displayed in the correct encoding for IE? The set encoding in DFP is UTF-8, on websites it is UTF-8
The network is excellent - simple and easy to use, and most importantly - Adsense insertion is allowed only in this network. We started using it, but then a problem was discovered - very often Adsense ads in Russian are displayed as krakozyabry. Tried this and that, the problem is not solved.