How to save V7.3 format variable quickly (in few seconds) like ordinary save command

I have a varaibale of size >2GB. I wanted to save it. So matlab shown me an error when I used ordinary save command [save info.mat info;] like below.

For variables larger than 2GB use MAT-file version 7.3 or later.

So i switched to

save ('info.mat','info', '-v7.3');

Now when I use this, It is taking aound 30-40 minutes to save that variable!!

Is there any way out I can quicken this process in several seconds..??

Please help!

[Walter Roberson]

Experiment with saving without compression; see https://www.mathworks.com/help/matlab/ref/save.html#bvmu1wo

[Megha]

Thank you Walter Roberson , it created 13 MB sized variable and later MATLAB crahsed!

[Megha]

Anyway I have saved the variable after waiting for 30 minutes.

Can you please help me for my next question on loading the saved variables...

https://in.mathworks.com/matlabcentral/answers/455447-error-using-load-out-of-memory-type-help-memory-for-your-options

It has only one variable saved inside with 52x1 cells. Is there any way I can access few cells amongst entire variable?