r4hdsc problem

games on my r4 sdhc lag i have 1.54 does anyone how to fix this. Im also new to this

What brand of MicroSD do you have (Sandisk, Kingston?) Some brands are faster than others, and higher quality ones are usually better.Backing up and formatting your card, then reinstalling the firmware, can fix freezing and lag issues. Check out the Common Issues thread.
https://www.romulation.org/forum/index.php?topic=1462.0

it just says micro sd hc 4gb

No brand? Do what TirithRR said (formatting).

get a new micro SD and download the R4i firmware from their website. ( 1.3 version )

1.54 is the newest gd11.