Please advise as to which would be the best antivirus to use on our Meat Matrix server as loading AVG shuts down the whole system, quarantining files that are required to run the system.
Every antivirus you install will quarantine the files on the server. The best way is to keep the antivirus installed. Access the quarantine section and restore the files, then go to the Setup Tree and locate the exclusions. Add the files to exclusion list and the server will work normally.
Additionally, visit the page created by AVG to learn more: https://support.avg.com/SupportArticleView?l=en_US&urlname=How-to-exclude-file-folder-or-website-from-AVG-scanning