Comments on classes make eclipse slow?

Question

I have an old project, whose size is 225Mb, where most classes have the whole body commented. In the past I did not use versioning of code in my company and the versioning was done in the code itself, commenting on a line and writing the change in the line below. Example:

==> 2019-07-09 the code was:

System.out.println ("Hello World 1");


==> 2019-07-10 the code was:       

//System.out.println("Hello World 1");    
System.out.println ("Hello World 2");

==> 2019-07-11 the code was:       

//System.out.println("Hello World 1");    
//System.out.println ("Hello World 2");
System.out.println ("Hello World 3");

Now imagine this for more than 2000 classes, where there are several large blocks of commented code.

Can all of these classes cause slowness in eclipse?

I ask because when I open this project the eclipse is very slow.