The PC runs ok at startup but slows down significantly after 15 min or so. Adobe Lightroom becomes unusable because it is so unresponsive. Firefox freezes 3-4 times every hour. I haven't posted the Firefox problem on the Mozila site because I think it is part of this problem. I use NoScript & try to be careful about what processes I allow but I'm not a Superuser with it. I think my PC might have been infected. Any help appreciated.
Tech Support Guy System Info Utility version 1.0.0.4
OS Version: Microsoft Windows 10 Home, 64 bit
Processor: AMD A10-6700 APU with Radeon(tm) HD Graphics, AMD64 Family 21 Model 19 Stepping 1
Processor Count: 4
RAM: 11445 Mb
Graphics Card: AMD Radeon HD 8670D, 768 Mb
Hard Drives: C: 910 GB (173 GB Free); D: 18 GB (2 GB Free); Q: 1863 GB (905 GB Free);
Motherboard: MSI, 2AE0
Antivirus: Windows Defender, Enabled and Updated
Tech Support Guy System Info Utility version 1.0.0.4
OS Version: Microsoft Windows 10 Home, 64 bit
Processor: AMD A10-6700 APU with Radeon(tm) HD Graphics, AMD64 Family 21 Model 19 Stepping 1
Processor Count: 4
RAM: 11445 Mb
Graphics Card: AMD Radeon HD 8670D, 768 Mb
Hard Drives: C: 910 GB (173 GB Free); D: 18 GB (2 GB Free); Q: 1863 GB (905 GB Free);
Motherboard: MSI, 2AE0
Antivirus: Windows Defender, Enabled and Updated