The most common factors that can increase the time required to achieve a PPP-RTK fixed solution are:
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Poor antenna quality or limited sky visibility
Obstructions, multipath, or poor signal reception can significantly slow convergence.
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Missing or incorrect GGA messages sent to the NTRIP caster
PointPerfect Flex uses the receiver's approximate position to provide localized corrections. If GGA messages are not being forwarded, or the reported position is inaccurate, convergence may be delayed.
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IP network latency or connectivity issues
Delays, packet loss, or interruptions in correction data delivery can impact fix times.
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Receiver configuration, firmware, or GNSS signal settings
Incorrect settings, outdated firmware, or disabled GNSS constellations, frequencies, or signals required by the correction service can slow convergence.
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Navigation rate or communication settings
An unsuitable measurement rate (CFG-RATE-MEAS) or baud rate mismatch can delay processing of correction data.
Note: If you need a faster Time To First Fix (TTFF) and have a u-blox module, see: u-blox AssistNow MGA assistance data over NTRIP