Merchant Portal: optimisation of update attributes process

Currently we have save request for every attribute, so updating and processing for several attributes(for example, on my project more than 140 attributes) on the Update Product Page takes a pretty much time.

I suggest two ways how to optimise it:

1. Leave updating attribute by attribute, but make asynchronous PATCH - request from the FrontEnd after filling the field with a value. The request is sent on the background and the window is not disabled for the next updating

2. Make One save attributes request for all updated values.

Both ways will optimise updating attributes.