Simulation is not running in real time due to excessive CPU load

Proteus simulation PIC many times this error prompt, the previous several times thought it was too hot, resulting in slow computer response, open a Web page card, and then shut down the computer, cool him down.

I didn't expect it to happen again tonight. This time it's still an old method to make the computer cool.

After half a day, I touched it and saw that it was too cool. Then I started the system, continued simulation, and continued the tuning.Program.

Isn't it my computer?

When I first learned about Proteus, Proteus simulation was achieved by converting dynamic simulation into transient equations.

Continue to observe. I saw the arrow in the back-and-forth direction of Proteus. It seems that I found a problem. I wanted to indicate the current direction. I didn't expect to add such a huge burden to the CPU, it seems that Proteus features cannot be enabled too much at the same time.

Remove the check mark after show wire current with arrows, and then simulate it. OK.