Is there any way to improve ocr recognition? && Is there anyway to improve the time when i call the read api?

Question

First question: Is there any way to improve ocr recognition?
I am getting a 70% success in form recognition ocr from Microsoft, what i am doing now is taking 3 images and merge them so i get close to 90%.
I also set the image to GrayScale and tested between different file formats.
Howerver this isn´t the way and i would like to improve ocr accurancy

Second question: Is there anyway to improve the time when i call the read api?
I´m form Spain and when i call form recognizer it lasts an average of 8 seconds. I have changed the image resolution and size, but last almost the same with 3Mb images and 100k images, how could i reduce this time?

Thanks!

Answer 1

Ok, i dind´t knew that accurancy is related to the quality of the file, thanks.
In that case, how could i improve the quality of an image took on 4k with great luminosity?
The average filesize of each image is 3MB.

Thanks!