Main window freezing temporarily with Hardware Accelerated Rendering (GPU)

[neens]

Hi there, I just made this account to notify you guys of this, I solved it by unchecking the box for the Hardware Accelerated Rendering (GPU) in the options menu, and it solved all problems. I did check through the forum (although only the newest threads) as I updated to paint.net 4.0 as the notification told me about it, and so far I have to say that I love every single change that you've made so far.
 
Anyways, the problem I had was that whenever I used ctrl + tab and ctrl + shift + tab to switch between images, any tools as well as zooming or scrolling suddenly stopped working in the main field. I could continue draw and do stuff, but I didn't see any changes other than in the history window, which made it really hard to know whether I drew right. I solved it by selecting all, copying, making a new image (with the same size), pasting, and then the changes I did to the last image was there, and I could go back to it and continue editing.
 
But this happened so often, and I couldn't see why. I was focused on the main drawing field, and I could scroll and zoom, but it didn't show any changes other than on the surrounding UI.
 
I have a (3-year-old) laptop with an i5-2410M CPU with 4 cores, rest of the specs here:

 

Application    paint.net 4.0 (Final 4.0.5288.36565)
Build Date    den 24 juni 2014
    
Hardware accelerated rendering (GPU)    False
Animations    True
Language    sv-SE
    
OS    Windows 7 Service Pack 1 (6.1.7601.65536)
.NET Runtime    4.0.30319.18444
Physical Memory    4 030 MB
    
CPU    Intel® Core i5-2410M CPU @ 2.30GHz
    Architecture    x64 (64-bit)
    Process Mode    64-bit
    Speed    ~2294 MHz
    Cores / Threads    4
    Features    DEP, SSE, SSE2, SSE3, SSSE3, SSE4_1, SSE4_2, XSAVE
    
Video Card    Mobile Intel® HD Graphics
    Dedicated Video RAM    561 MB
    Dedicated System RAM    0 MB
    Shared System RAM    1 759 MB
    Vendor ID    0x8086
    Device ID    0x0116
    Subsystem ID    0x167F103C
    Revision    9
    LUID    0x00009BF7
    Flags    None
    Outputs    1