"Images too big" should not be a reason why images fail to upload.
Based on what you were commenting about 2 months ago (@chrisrice/re-hgrj2nn0y86ey9g2tzpnb3, @chrisrice/re-3wj6ytk89doaofabmq7c4o, and @chrisrice/re-ud6m1xikxzwmw032jgbble), you were saying that there is an issue with D.Buzz's #IPFS provider #Fleek. I recommend that you check the D.Buzz server side too, not only suspecting that the IPFS provider has issues on its own.
In the meantime, D.Buzz users like @muaynoi and @savvyplayer upload images using another Hive frontend (such as #PeakD, #Ecency, or #HiveBlog), then paste the link on the buzz to be posted on D.Buzz.