OPT3101EVM: Replace TX led from SH4550 to VSLY5850 the distance accuracy become worse

Hi,

      After replace the on board TX side led the distance error above 1 meter.  If this type led not suite for OPT3101?

I had tried to solder 2 pcs VISHY led to avoid the bad led and  the result was same, go back to solder EVM led SH4550 the distance accuracy become good. 

vsly5850.pdfSFH 4550_EN.pdf