snake_eye

1/ Get a good LOS by unbuttoning the tank
2/ Engage the JS2 at longer range and slightly offset your tank axis by something like 20 to the most 30 Degrees to favorize shell deflection. In another term, don't Keep your tank straight to the enemy gun.
3/ If You can take a hull down position the better it is.
4/ Fire at the JS2 while stationary and never on its front facing (unless in a dire situation or at short range).Try to engage it on its flank with a fire angle greater than 30 Degrees, the better will be the closer to 90 degrees).
5/ Since the JS2 has a low rate of fire engage it at longer range (more than 500 to 800 meters). The closer it comes the more deadly it Will be for the enemy but also for you And your long range fire advantage will dwindle to None.
6/ Try to engage the JS2 with two tanks to uptimize your chance.
7/ If You find a good flank ambush site and have two tanks, you can from a short range up to 300 meters create havoc in a JS2 platoon. They will rotate slowly their turret, will not respond to your fire quickly being buttoned having difficulties with their LOS (unless you are in plain view)
8/ If things turn wrong, hit the smoke dischargers button and reverse out of the way of the coming beast.

I have had the same problem with AVAST. The exe was put in the quarantine folder of my desktop. The same happened with my laptop. I messed around for a while not finding any solution. Then I got an idea. That is, retrieving the file from the quarantine folder and put it back in the CMSF folder.It worked fine. I made a report for a false positive to AVAST. I have had no answer ever since. I did the same on my Laptop and it kept sending the file in the quarantine folder and I have found no ways to prevent AVAST doing it. So for the time being I am playing with my desktop.
BTW all the patches exe were declared as Win32:malware-gen and or Win32:adware-gen