Please try single scan and set to avira . Then try totally to disable scanning and check each change. Then revert back but leave only single scan and avira not Sophos . Then try with IPS disable. Look at the results. I am almost sure the IPS is the cause but please inform here what results you got in each test.
Please try single scan and set to avira . Then try totally to disable scanning and check each change. Then revert back but leave only single scan and avira not Sophos . Then try with IPS disable. Look at the results. I am almost sure the IPS is the cause but please inform here what results you got in each test.